I just built a new pc from scratch and these are the specifications of my pc:
Gigabyte F2A85XM-D3H motherboard socket FM2 bios version f4c (latest one)
APU A10-6800K AMD processor
2*4Gb G.Skill F3-14900CL8D-8GBXM wich is compatible with the motherboard
120Gb ssd samsung
Windows 7 64 bits
I can run the system without any problems but for one thing. It depends on the way i plug my ram, but in any cases, the bios and cpu-z detect my 8Gb or ram plugged on the motherboard. Considering that, Windows only detects the ram plugged in the socekts of the first channel. Which means that if my ram sockets are displayed by relation to the processor socekt
the only way for Windows to detect that there is 8Gb installed on my motherboard is by plugging them in socket 4 and 2 that are not in dual channel. Plugging the ram in socket 1 and 3 will not even work.
If i plug bot sticks in socket 1 and 2 together, or in socket 3 and 4 together, Windows will only detect 4Gb. That is, even if the bios mention 8Gb of ram as well as cpu-z. Cpu-z will mention that the ram will always be in single-channel in any configuration.
I already asked an rma for the motherboard and the same problem happened to me with the new motherboard. I switched the ram from sockets and nothing was different. I also verified in Windows in the system monitor concerning the ram and in msconfig as well.
I did some researches and what i found was that it might be a cpu/apu problem. The apu looks pretty much ok visually though. I don't know if it's possible, but the chip would be defective for the dual-channel, but working pretty well for the rest. I'm not an expert, but my researched lead me to that. Is it plausible? Or is it a problem concerning the voltage?
Thank you for answering what you think of that. I may be way off the real problem, but as I mentionned, I'm not an expert.
11:32 AM by